4 M200N-DNRS

Item Number: 0191020
1 1
$8,562.00
Special Order
When Will it Ship: Contact for Lead Time
Estimated transit time: 2 to 5 Business Days

Brand - Ames
  • Nominal Size: 4 inch
  • Body Material: 304 Stainless Steel
  • Maximum Working Pressure: 175 PSI
  • Lead Content: Less than 0.25% by weight
  • Check Valve Type: Tri-Link
  • Shutoff Valves: Non-Rising Stem Gate
  • Installation Pattern: N Pattern
  • Easy maintenance with single access sleeve

Description

The AMES Maxim™ 4 inch lead-free double check valve backflow preventer assembly, SKU 0191020, is designed to prevent the reverse flow of fire protection substances and non-potable water into the potable water supply. It effectively protects against backsiphonage and backpressure in non-health hazard cross-connections, such as high-flow fire systems. This compact unit features a durable 304 stainless steel body, Tri-Link check valves, and non-rising stem (NRS) resilient seated gate valves. Approved for N pattern installation and rated for 175 PSI, it offers easy maintenance and contains less than 0.25% lead.

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Installation and Connections

  • This assembly is approved for N pattern installation, following the direction of the flow arrow on the unit. It is also suitable for horizontal and vertical installations.
  • Features groove fittings that allow for integral pipeline adjustment, simplifying connection into your system.
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Additional Details

The AMES Maxim™ 4 inch lead-free double check valve backflow preventer assembly is designed to prevent the reverse flow of fire protection substances and non-potable water into the potable water supply. It protects against backsiphonage and backpressure in cross-connections identified as non-health hazards, such as high-flow fire systems.

This compact modular design features a 304 stainless steel body, Tri-Link check valves, and non-rising stem (NRS) resilient seated gate valves. It is approved for N pattern installation and offers ease of maintenance with a single access sleeve.

Features

  • Compact modular design with single access sleeve for easy maintenance
  • 304 (Schedule 40) Stainless Steel Housing & Sleeve
  • Tri-Link check modules provide lowest pressure loss
  • Non-rising stem (NRS) resilient seated gate valves and ball valve type test cocks
  • Groove fittings allow integral pipeline adjustment
  • Maximum working pressure of 175 PSI (12.06 bar)
  • Lead-free construction: wetted surface contains less than 0.25% lead by weight
  • No special tools required for maintenance

Specifications

  • Product Type: Double Check Valve Backflow Preventer Assembly
  • Nominal Size: 4 inch
  • Brand: AMES Maxim™
  • Body Material: 304 Stainless Steel
  • Check Valves: Tri-Link
  • Shutoff Valves: Non-Rising Stem (NRS) Resilient Seated Gate Valves
  • Test Cocks: Ball Valve Type
  • Installation Pattern: N Pattern (also available for Horizontal, Vertical)
  • Maximum Working Pressure: 175 PSI (12.06 bar)
  • Lead Content: Less than 0.25% by weight (Lead Free)

Certificates & Approvals

  • Approved by Foundation for Cross-Connection Control and Hydraulic Research at USC (FCCCHR-USC)
  • AWWA C510-97
  • ASSE 1015
  • CSA B64.5
  • UL/FM Certified Flow Characteristics
  • NSF Certified to NSF/ANSI 61-G

FAQs

What is the primary purpose of this backflow preventer?

This AMES Maxim™ backflow preventer is designed to prevent the reverse flow of fire protection substances and non-potable water into the potable water supply due to backsiphonage or backpressure, protecting against non-health hazards.

What type of shutoff valves and check valves does this assembly utilize?

It utilizes non-rising stem (NRS) resilient seated gate valves for shutoff and patented Tri-Link check valves for backflow prevention, which are designed to provide the lowest pressure loss.

What is the maximum operating pressure for this backflow preventer?

The maximum working pressure for this 4 inch double check valve backflow preventer assembly is 175 PSI (12.06 bar).

Is this product considered lead-free?

Yes, the wetted surface of this product contacted by consumable water contains less than 0.25% lead by weight, classifying it as lead-free.

What material is used for the main body and housing?

The housing and sleeve are constructed from 304 (Schedule 40) stainless steel, offering durability and corrosion resistance.

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